Electromagnetic organ-action.



L. D MORRIS.

ELECTROMAGNETIC ORGAN ACTION.

APPLICATION FILED SEPT. 13. 1917.

1 82,275. Patented Oct. 1918.

LEONARD D. MORRIS, OF CHICAGO, ILLINOIS.

ELECTROMAGNETIC ORGAN-ACTION.

Specification of Letters Patent.

Patented Oct. 22, 1918.

Application filed September 13, 1917. Serial No. 191,274.

T all whom it may concern:

Be it known that I, LEONARD D. MORRIS, a citizen of the United States, residing at Chi-- cago, in the county of Cook and State of Illinois, have invented certain new and useful' Improvements in Electromagnetic Orgen-Actions, of which the following is a specification.

The essential object of this invention is to provide a certain new and useful improvement in actions for organs of the electromagnetic type, and the invention embodies a coil adapted to be energized upon depression of one of the keyseither manual or pedaland means actuated by the coil controlling the passage of air from the bellows or blower into. the pipe or pipes.

In the drawings, Figure 1 is a vertical secat right angles to each other.

The base'or board 1 is apertured at 2 and one of the organ pipes (not shown) is either fitted into aperture 2 or in suitable connection therewith so that the compressed air within the wind chest 3 may pass in the direction of the arrow A. The wind chest 3 is shown as being substantially rectangular in section and may be formed of the board 1 together with other boards or walls 4 and 5. The devices forming the subject matter of the herein described invention are intended to open and close the aperture 2 and fire preferably retained within the cham- A bracket 6 made of metal or other suitable material is secured by screws to the perforated baseboard l. Said bracket 6 bears an arm 7 which lies in a plane .substantially parallel to the base-board 1, and the coil 8 is bolted or screwed at 9 to arm 7. .Inside of the coil 8 is a core 10 which is magnetized when the coil 8 is energized, and suitable wires (not shown) extend from the coil 8 to the appropriate key of the instrument, the circuit being so arranged that depression of the appropriate key closes the circuit through the coil 8 and magnetizes the core 10;

An L-shaped piece 11 preferably formed of relatively thin spring steel is riveted or secured at 12 to the bracket 6. Said springlike member 11 extends transversely across the coil 8 and substantially perpendicular to the soft iron core 10. An armature 11 made of soft iron is riveted at 15 to the spring 11, which armature 15 bears a layer of felt 16 so as to prevent impact of the metal armature 1% upon the metal core 10, for the noise that would be permitted were these two hard parts .to contact would be highly objectionable in any organ. At its free end the spring 11 carries a disk 17 made of felt or other soft material and opening inwardly of the wind chest, which disk 17 normally closes the aperture 2, being pushed into contact with the perforated base-board 1 because of the action of the spring 11. When the coil 8 is energized and the core 10 magnetized, said core attracts the armature 14 and thus pulls the free end of the spring 11 downwardly in Fig. 1, carrying the valve-like disk 17 away from the lower mouth of the aperture 2, which opening of the aperture 2 permits the air from the chamber 8 to pass upwardly in the direction of the arrow A and sound the pipe which connects with the aperture 2.

In order to regulate the normal ,osition of the arm 11 a screw 18 is provi ed, the head of which engages the spring 11 on the same side of said spring as the armature 14. The shank of the screw passes through the perforation 19 in the spring 11 and is received within a suitable taphole provided therefor either in the bracket 6 or the baseboard 1.

It is obvious that sundry changes in the details of construction and arrangement of parts may be made Without departing from the scope of the invention.

I claim as my invention:

1. A device of the character described comprising a core, an armature located to be attracted thereby, a spring upon which said armature is carried, a baseboard having a perforation, a valve adapted to close said perforation, secured near the free end of said spring andnormally closed thereby, and means for adjusting the valve closing pressure of said spring.

2. A device of the character described comprising a perforated base-board, a bracket depending therefrom, a core supported by the bracket, an L-shaped springhaving one end secured to said bracket and extending substantially at right angles to said core, a valve carried upon the free end of said spring, an armature also carried upon said spring, and a screw extending from said spring to said perforated baseplate and adapted to regulate the tension of said spring.

3. In a device of the character described comprising a perforated base-board, a bracket depending therefrom, a core supported by the bracket, an L-shaped spring having one end secured to said bracket and extending substantially at right angles to said core, a valve carried upon the free end of said spring, an armature also carried upon said spring, a screW extending from said spring to said perforated base-plate and adapted to regulate the tension of said spring, and a layer of sound absorbing, nonmagnetic material intermediate the armature and the core.

4. An "electromagnetic organ valve, comprising an electromagnet, a rigid support therefor, a leaf spring fixed by-one end tosaid support and having its free end located to be attracted by the electromagnet, a valve carried on the free end of the spring, and a screw threaded into the support and connected to the free end of the-spring.

In testimony whereof I affix my signature.

LEONARD D. MORRIS. 

